An Earth Analog (also Referred To As An Earth Analogue Earth Twin Or Earth-Like Planet Though This

An Earth analog (also referred to as an Earth analogue, Earth twin, or Earth-like planet, though this latter term may refer to any terrestrial planet) is a planet or moon with environmental conditions similar to those found on Earth. The possibility is of particular interest to astrobiologists and astronomers under reasoning that the more similar a planet is to Earth, the more likely it is to be capable of sustaining complex extraterrestrial life. As such, it has long been speculated and the subject expressed in science, philosophy, science fiction and popular culture. Advocates of space colonization have long sought an Earth analog as a second home, while advocates for space and survival would regard such a planet as a potential new home for humankind.
Source: Wikipedia

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